PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-21:42:50
G01     104.0          26.6                9.0 +/-    0.97      16.9 +/-    0.97  0.030 / 0.040
G07     113.3          51.2               11.0 +/-    0.49      13.6 +/-    0.49  0.030 / 0.040
G08     41.5           16.6                7.2 +/-    1.71      17.1 +/-    1.71  0.250 / 0.330
G09     174.7          12.1               10.9 +/-    1.43      29.1 +/-    1.43  0.270 / 0.390
G11     83.0           42.6               10.8 +/-    1.32      15.0 +/-    1.32  0.100 / 0.120
G13     307.1          31.0                8.7 +/-    1.36      14.9 +/-    1.36  0.060 / 0.120
G17     205.8          42.2               11.8 +/-    1.32      16.6 +/-    1.32  0.270 / 0.160
G18     74.2           23.6                8.3 +/-    0.76      16.7 +/-    0.76  0.290 / 0.240
G28     315.5          60.1                8.1 +/-    0.74       9.2 +/-    0.74  0.050 / 0.050
G30     39.8           79.3               10.5 +/-    0.80      10.7 +/-    0.80  0.050 / 0.060