PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-17:12:50
G01     127.9          11.0               13.3 +/-    6.17      36.3 +/-    6.17  0.040 / 0.050
G07     48.3           69.8               11.8 +/-    0.47      12.5 +/-    0.47  0.050 / 0.060
G08     52.4           42.3               10.1 +/-    0.94      14.2 +/-    0.94  0.030 / 0.030
G09     178.3          37.2               12.9 +/-    0.78      19.7 +/-    0.78  0.030 / 0.030
G11     120.4          34.5               13.4 +/-    1.30      21.4 +/-    1.30  0.030 / 0.040
G13     321.4          10.7               -6.4 +/-   11.18     -17.5 +/-   11.18  0.030 / 0.030
G17     200.8          11.5                4.7 +/-   30.84      12.6 +/-   30.84  0.140 / 0.260
G18     105.1          16.1               11.7 +/-    2.53      28.4 +/-    2.53  0.130 / 0.260
G28     275.0          52.5               12.1 +/-    3.24      14.8 +/-    3.24  0.220 / 0.320
G30     332.8          60.2               10.1 +/-    0.59      11.4 +/-    0.59  0.360 / 0.260