PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/26-22:12:50
G01     123.7          13.8               11.3 +/-    2.47      28.8 +/-    2.47  0.030 / 0.040
G07     73.7           65.9                9.1 +/-    0.91       9.8 +/-    0.91  0.020 / 0.040
G08     47.1           34.6                8.1 +/-    1.03      12.9 +/-    1.03  0.120 / 0.100
G09     177.8          32.6               10.5 +/-    1.60      17.4 +/-    1.60  0.110 / 0.110
G11     112.0          37.9               10.8 +/-    0.56      16.3 +/-    0.56  0.060 / 0.090
G13     319.8          15.3                8.2 +/-    3.65      20.2 +/-    3.65  0.070 / 0.070
G17     199.4          20.3                9.8 +/-    2.42      21.3 +/-    2.42  0.110 / 0.400
G18     96.5           18.2                8.9 +/-    1.81      20.4 +/-    1.81  0.100 / 0.350
G28     277.9          52.3                9.4 +/-    2.98      11.6 +/-    2.98  0.090 / 0.240
G30     337.4          63.8                8.6 +/-    0.61       9.5 +/-    0.61  0.100 / 0.200