PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/24-04:27:50
G01     71.3           32.9                4.5 +/-    1.49       7.5 +/-    1.49  0.090 / 0.080
G07     136.9          29.1                7.0 +/-    1.36      12.6 +/-    1.36  0.070 / 0.090
G11     52.8           29.8                5.0 +/-    1.70       8.7 +/-    1.70  0.060 / 0.080
G13     274.6          38.1                3.9 +/-    1.26       5.8 +/-    1.26  0.050 / 0.080
G15     304.0          14.5               -0.2 +/-    1.37      -0.5 +/-    1.37  0.040 / 0.050
G17     233.1          71.6                6.0 +/-    0.55       6.3 +/-    0.55  0.040 / 0.050
G18     46.7           16.0                3.5 +/-    3.05       8.4 +/-    3.05  0.210 / 0.390
G19     223.3          39.5                5.6 +/-    1.49       8.2 +/-    1.49  0.180 / 0.270
G28     14.1           60.2                4.7 +/-    1.13       5.4 +/-    1.13  0.060 / 0.100
G30     135.1          63.8                6.5 +/-    0.42       7.2 +/-    0.42  0.060 / 0.080