PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-17:43:10
G07     325.2          54.8               10.7 +/-    0.61      12.8 +/-    0.61  0.160 / 0.440
G08     113.1          50.4               12.5 +/-    0.27      15.7 +/-    0.27  0.160 / 0.830
G09     205.6          78.9               11.2 +/-    0.42      11.4 +/-    0.42  0.040 / 0.060
G16     45.6           9.9                 9.3 +/-    2.77      26.1 +/-    2.77  0.040 / 0.040
G23     152.1          42.1               11.4 +/-    0.81      16.0 +/-    0.81  0.050 / 0.070
G27     59.6           33.7                9.7 +/-    1.14      15.7 +/-    1.14  0.040 / 0.070
G28     233.8          26.0               13.1 +/-    2.88      25.1 +/-    2.88  0.050 / 0.050
G30     298.9          33.2                9.0 +/-    2.29      14.7 +/-    2.29  0.040 / 0.050