PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-03:43:00
G01     80.5           33.1                4.9 +/-    0.88       8.0 +/-    0.88  0.040 / 0.080
G07     132.1          35.8                5.3 +/-    0.82       8.3 +/-    0.82  0.040 / 0.080
G11     58.7           34.7                3.6 +/-    0.85       5.7 +/-    0.85  0.030 / 0.060
G13     284.4          38.2                4.7 +/-    0.83       7.1 +/-    0.83  0.040 / 0.060
G15     310.2          12.5                1.5 +/-    2.20       3.9 +/-    2.20  0.090 / 0.200
G17     221.1          64.4                6.7 +/-    0.57       7.3 +/-    0.57  0.080 / 0.210
G18     52.7           19.4                3.2 +/-    0.80       7.2 +/-    0.80  0.080 / 0.110
G19     218.4          32.7                5.4 +/-    1.40       9.0 +/-    1.40  0.070 / 0.120
G28     359.4          61.3                4.1 +/-    0.46       4.6 +/-    0.46  0.030 / 0.030
G30     123.8          70.9                5.9 +/-    0.56       6.2 +/-    0.56  0.040 / 0.030