PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-16:43:00
G01     126.9          11.8               13.6 +/-    2.82      36.4 +/-    2.82  0.050 / 0.060
G07     52.2           69.7               13.2 +/-    0.41      14.0 +/-    0.41  0.050 / 0.050
G08     51.2           41.0               12.0 +/-    0.72      17.2 +/-    0.72  0.030 / 0.040
G09     178.0          35.7               13.9 +/-    1.81      21.8 +/-    1.81  0.040 / 0.040
G11     118.9          35.3               14.2 +/-    0.71      22.4 +/-    0.71  0.030 / 0.040
G13     321.1          11.7                9.2 +/-   19.87      24.7 +/-   19.87  0.030 / 0.040
G17     200.8          13.0               14.6 +/-    1.63      38.1 +/-    1.63  0.060 / 0.110
G18     103.9          16.7               12.9 +/-    1.00      30.8 +/-    1.00  0.070 / 0.120
G28     276.8          53.1               14.1 +/-    1.36      17.1 +/-    1.36  0.050 / 0.290
G30     333.9          61.1               12.6 +/-    0.90      14.2 +/-    0.90  0.080 / 0.320