PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-22:27:50
G07     337.7          59.6               11.6 +/-    0.74      13.3 +/-    0.74  0.090 / 0.140
G08     96.7           53.2               11.1 +/-    0.55      13.5 +/-    0.55  0.060 / 0.160
G09     190.2          70.9               12.3 +/-    0.98      13.0 +/-    0.98  0.030 / 0.050
G11     145.9          14.4               12.6 +/-    3.20      31.8 +/-    3.20  0.030 / 0.050
G23     156.1          36.7               12.5 +/-    0.84      19.3 +/-    0.84  0.050 / 0.100
G27     51.4           29.2                7.8 +/-    1.23      14.0 +/-    1.23  0.050 / 0.090
G28     240.5          32.9               12.7 +/-    1.51      20.9 +/-    1.51  0.150 / 0.510
G30     307.5          41.0                9.6 +/-    1.11      13.8 +/-    1.11  0.200 / 0.560