PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-10:42:50
G01     68.0           32.6                4.6 +/-    1.03       7.7 +/-    1.03  0.040 / 0.040
G07     138.7          28.0                6.1 +/-    1.05      11.2 +/-    1.05  0.040 / 0.040
G11     51.2           28.0                2.1 +/-    0.59       3.9 +/-    0.59  0.070 / 0.080
G13     270.9          37.4                6.0 +/-    1.17       9.2 +/-    1.17  0.060 / 0.080
G15     304.7          13.3                1.7 +/-    1.63       4.4 +/-    1.63  0.140 / 0.410
G17     239.6          73.1                6.1 +/-    0.83       6.3 +/-    0.83  0.120 / 0.470
G18     46.0           15.9                2.0 +/-    1.81       4.8 +/-    1.81  0.060 / 0.130
G19     225.6          39.8                5.1 +/-    1.72       7.4 +/-    1.72  0.050 / 0.120
G28     21.9           59.1                5.0 +/-    0.33       5.7 +/-    0.33  0.040 / 0.060
G30     138.2          61.2                8.1 +/-    0.54       9.1 +/-    0.54  0.040 / 0.060