PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-05:12:40
G01     76.5           33.3                4.8 +/-    1.05       7.9 +/-    1.05  0.040 / 0.040
G07     134.5          35.0                7.3 +/-    1.12      11.6 +/-    1.12  0.030 / 0.050
G11     58.2           34.2                5.3 +/-    1.44       8.5 +/-    1.44  0.070 / 0.220
G13     282.0          37.2                7.0 +/-    1.53      10.6 +/-    1.53  0.110 / 0.190
G15     306.1          14.6                0.7 +/-    3.14       1.8 +/-    3.14  0.060 / 0.030
G17     226.3          65.4                7.9 +/-    0.91       8.6 +/-    0.91  0.040 / 0.030
G19     220.9          38.8                7.6 +/-    1.62      11.3 +/-    1.62  0.070 / 0.080
G28     12.4           60.0                4.7 +/-    0.65       5.3 +/-    0.65  0.080 / 0.090
G30     129.5          64.1                7.1 +/-    0.43       7.8 +/-    0.43  0.080 / 0.120