PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-06:58:10
G02     200.3          18.9                8.0 +/-    2.04      18.1 +/-    2.04  0.070 / 0.120
G06     172.7          51.2                9.0 +/-    1.27      11.1 +/-    1.27  0.070 / 0.110
G13     227.7          14.1                7.5 +/-    1.99      19.1 +/-    1.99  0.170 / 0.320
G17     24.0           58.7                6.0 +/-    0.64       6.9 +/-    0.64  0.120 / 0.410
G19     310.2          70.7                5.9 +/-    0.84       6.2 +/-    0.84  0.070 / 0.050
G24     308.2          32.5                5.1 +/-    1.44       8.5 +/-    1.44  0.040 / 0.060
G28     84.8           42.2                8.1 +/-    0.60      11.4 +/-    0.60  0.130 / 0.210
G30     157.5          17.1                8.4 +/-    1.57      19.9 +/-    1.57  0.080 / 0.210