PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-03:42:40
G01     82.9           32.9                4.1 +/-    0.92       6.8 +/-    0.92  0.040 / 0.070
G07     130.7          37.5                6.1 +/-    0.68       9.3 +/-    0.68  0.040 / 0.070
G11     60.4           35.9                2.3 +/-    0.56       3.6 +/-    0.56  0.100 / 0.110
G13     286.8          37.9                4.7 +/-    1.56       7.1 +/-    1.56  0.100 / 0.100
G15     311.7          11.8                1.8 +/-    1.66       4.8 +/-    1.66  0.030 / 0.050
G17     218.9          62.6                6.7 +/-    1.07       7.4 +/-    1.07  0.030 / 0.060
G18     54.4           20.1                1.5 +/-    1.75       3.2 +/-    1.75  0.090 / 0.250
G19     217.4          30.9                6.3 +/-    2.60      10.8 +/-    2.60  0.090 / 0.230
G28     355.8          61.5                4.6 +/-    0.69       5.1 +/-    0.69  0.030 / 0.030
G30     119.8          72.6                5.7 +/-    0.69       5.9 +/-    0.69  0.030 / 0.030