PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-19:58:00
G01     97.0           29.4               11.2 +/-    1.20      19.9 +/-    1.20  0.050 / 0.050
G07     120.6          44.9               13.0 +/-    0.80      17.6 +/-    0.80  0.040 / 0.050
G08     41.6           12.0                9.3 +/-    1.20      25.0 +/-    1.20  0.050 / 0.150
G11     74.7           41.7               10.4 +/-    2.16      14.7 +/-    2.16  0.060 / 0.130
G13     301.0          34.4               10.7 +/-    0.81      17.2 +/-    0.81  0.130 / 0.120
G17     209.2          47.9               14.4 +/-    1.07      18.6 +/-    1.07  0.090 / 0.160
G18     68.1           23.8                9.6 +/-    1.42      19.3 +/-    1.42  0.050 / 0.050
G19     211.3          21.4               12.3 +/-    1.88      26.1 +/-    1.88  0.040 / 0.040
G28     326.8          61.0               11.0 +/-    0.70      12.4 +/-    0.70  0.030 / 0.030
G30     81.3           78.5               13.2 +/-    0.57      13.4 +/-    0.57  0.040 / 0.030