PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-22:58:00
G01     103.5          26.9               10.0 +/-    1.22      18.8 +/-    1.22  0.030 / 0.050
G07     113.8          51.3               11.7 +/-    0.85      14.5 +/-    0.85  0.030 / 0.040
G08     41.4           15.8                8.1 +/-    2.26      19.8 +/-    2.26  0.240 / 0.400
G09     174.4          11.3               13.0 +/-    1.77      35.3 +/-    1.77  0.270 / 0.380
G11     82.1           42.5               11.2 +/-    1.43      15.6 +/-    1.43  0.060 / 0.130
G13     306.6          31.3               10.3 +/-    1.48      17.6 +/-    1.48  0.070 / 0.160
G17     206.0          43.2               13.1 +/-    0.90      18.2 +/-    0.90  0.040 / 0.050
G18     73.1           23.5                9.3 +/-    1.72      18.9 +/-    1.72  0.050 / 0.050
G28     317.2          60.4                9.5 +/-    0.86      10.7 +/-    0.86  0.140 / 0.210
G30     40.1           79.5               10.5 +/-    0.61      10.7 +/-    0.61  0.100 / 0.200