PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-20:58:10
G01     106.5          25.9               12.7 +/-    2.00      24.3 +/-    2.00  0.070 / 0.090
G07     107.5          58.3               11.6 +/-    1.23      13.3 +/-    1.23  0.120 / 0.170
G08     42.5           23.8                8.8 +/-    1.80      17.6 +/-    1.80  0.110 / 0.130
G09     175.3          13.7               13.6 +/-    1.32      34.9 +/-    1.32  0.090 / 0.130
G11     90.6           43.3               11.2 +/-    1.46      15.5 +/-    1.46  0.070 / 0.110
G13     309.4          28.7                9.5 +/-    0.84      17.1 +/-    0.84  0.070 / 0.140
G17     207.3          34.3               13.3 +/-    1.44      21.5 +/-    1.44  0.020 / 0.030
G18     80.3           24.5               12.7 +/-    1.53      25.2 +/-    1.53  0.030 / 0.030
G28     320.1          61.2                9.8 +/-    0.71      11.0 +/-    0.71  0.030 / 0.040
G30     38.2           78.4               10.8 +/-    0.55      11.0 +/-    0.55  0.030 / 0.030