PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-18:27:50
G01     96.9           29.4               11.7 +/-    0.93      20.8 +/-    0.93  0.040 / 0.060
G07     120.7          44.4               13.6 +/-    1.55      18.5 +/-    1.55  0.040 / 0.060
G08     41.7           12.6                8.2 +/-    2.60      21.7 +/-    2.60  0.040 / 0.070
G11     74.9           41.9               12.6 +/-    0.71      17.7 +/-    0.71  0.050 / 0.070
G13     300.9          34.5               13.1 +/-    1.35      21.0 +/-    1.35  0.060 / 0.060
G17     209.4          47.2               13.1 +/-    1.69      17.2 +/-    1.69  0.050 / 0.070
G18     68.5           24.0               11.1 +/-    0.54      22.2 +/-    0.54  0.060 / 0.120
G19     211.3          21.7               11.7 +/-    1.00      24.7 +/-    1.00  0.060 / 0.140
G28     326.1          60.9               11.3 +/-    0.92      12.8 +/-    0.92  0.060 / 0.150
G30     84.7           77.9               12.7 +/-    0.71      13.0 +/-    0.71  0.060 / 0.150