PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/05-13:42:50
G02     201.5          17.3                7.7 +/-    1.23      18.1 +/-    1.23  0.040 / 0.040
G06     167.4          55.6                8.9 +/-    1.03      10.6 +/-    1.03  0.040 / 0.030
G13     227.0          13.2                6.3 +/-    2.58      16.2 +/-    2.58  0.040 / 0.080
G17     24.7           58.2                6.9 +/-    0.36       8.0 +/-    0.36  0.050 / 0.090
G19     308.4          70.1                6.0 +/-    0.80       6.4 +/-    0.80  0.180 / 0.580
G24     309.1          31.1                5.0 +/-    1.01       8.6 +/-    1.01  0.210 / 0.530
G28     87.3           40.1                8.3 +/-    0.75      12.1 +/-    0.75  0.060 / 0.040
G30     157.8          16.8                9.6 +/-    1.95      23.0 +/-    1.95  0.030 / 0.040