PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-11:28:00
G01     76.9           33.1                4.4 +/-    1.06       7.2 +/-    1.06  0.060 / 0.070
G07     134.1          33.7                6.1 +/-    1.21      10.0 +/-    1.21  0.050 / 0.080
G11     57.1           32.3                2.8 +/-    0.54       4.7 +/-    0.54  0.030 / 0.030
G13     283.6          36.8                5.9 +/-    0.72       9.1 +/-    0.72  0.030 / 0.040
G15     308.1          13.6                2.8 +/-    1.44       7.2 +/-    1.44  0.080 / 0.180
G17     225.8          66.9                6.8 +/-    1.00       7.3 +/-    1.00  0.060 / 0.180
G19     220.6          39.0                7.6 +/-    1.53      11.3 +/-    1.53  0.030 / 0.050
G28     10.9           60.2                3.4 +/-    0.75       3.9 +/-    0.75  0.030 / 0.040
G30     127.4          68.1                5.6 +/-    0.52       6.0 +/-    0.52  0.070 / 0.090