PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-13:27:50
G01     78.8           33.2                5.6 +/-    1.06       9.2 +/-    1.06  0.030 / 0.030
G07     133.1          37.0                6.5 +/-    0.80       9.9 +/-    0.80  0.040 / 0.030
G11     58.1           34.2                4.3 +/-    0.85       6.9 +/-    0.85  0.090 / 0.250
G13     282.7          38.0                5.9 +/-    1.22       8.9 +/-    1.22  0.080 / 0.300
G15     311.0          11.6                2.8 +/-    1.81       7.5 +/-    1.81  0.060 / 0.120
G17     223.4          64.1                8.4 +/-    0.80       9.2 +/-    0.80  0.060 / 0.110
G18     54.2           20.8                4.3 +/-    2.12       9.3 +/-    2.12  0.080 / 0.130
G19     219.6          32.4                6.8 +/-    1.43      11.4 +/-    1.43  0.060 / 0.150
G28     6.9            60.7                5.2 +/-    1.20       5.8 +/-    1.20  0.040 / 0.090
G30     126.1          69.9                6.3 +/-    1.18       6.7 +/-    1.18  0.030 / 0.070