PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-10:28:10
G01     78.0           33.3                5.3 +/-    0.57       8.7 +/-    0.57  0.030 / 0.040
G07     133.6          35.7                7.0 +/-    0.99      11.0 +/-    0.99  0.030 / 0.030
G11     57.3           33.7                3.0 +/-    0.82       4.9 +/-    0.82  0.080 / 0.110
G13     281.8          38.1                5.8 +/-    1.10       8.7 +/-    1.10  0.070 / 0.120
G15     311.7          10.9               -0.4 +/-   11.66      -1.1 +/-   11.66  0.060 / 0.120
G17     224.2          65.4                7.4 +/-    1.43       8.1 +/-    1.43  0.060 / 0.120
G18     52.8           20.0                3.0 +/-    2.02       6.5 +/-    2.02  0.080 / 0.200
G19     220.0          32.1                4.0 +/-    0.73       6.8 +/-    0.73  0.090 / 0.250
G28     6.5            60.8                3.8 +/-    0.65       4.3 +/-    0.65  0.080 / 0.120
G30     127.4          69.4                7.6 +/-    0.64       8.0 +/-    0.64  0.080 / 0.110