PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-02:43:00
G01     117.9          18.5                9.9 +/-    1.54      22.5 +/-    1.54  0.030 / 0.040
G07     87.7           63.7                6.1 +/-    0.37       6.7 +/-    0.37  0.030 / 0.030
G08     43.7           27.9                2.1 +/-    1.07       3.8 +/-    1.07  0.150 / 0.390
G09     175.6          23.5                8.7 +/-    1.13      17.6 +/-    1.13  0.120 / 0.260
G11     102.7          40.6                8.9 +/-    0.84      12.8 +/-    0.84  0.060 / 0.060
G13     316.9          20.9                2.5 +/-    1.95       5.4 +/-    1.95  0.040 / 0.060
G17     200.7          28.3                7.5 +/-    1.58      13.6 +/-    1.58  0.100 / 0.220
G18     89.0           20.8                6.5 +/-    1.19      14.0 +/-    1.19  0.110 / 0.180
G28     291.2          56.4                5.0 +/-    0.69       5.8 +/-    0.69  0.030 / 0.030
G30     345.8          68.9                2.3 +/-    0.98       2.5 +/-    0.98  0.030 / 0.030