PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/27-06:13:10
G01     45.1           21.1                2.2 +/-    3.07       4.7 +/-    3.07  0.030 / 0.050
G06     180.1          28.0                5.0 +/-    2.00       9.1 +/-    2.00  0.030 / 0.060
G11     43.7           10.0                2.2 +/-    2.23       6.2 +/-    2.23  0.120 / 0.200
G13     245.0          26.4                4.8 +/-    2.26       9.1 +/-    2.26  0.090 / 0.230
G15     276.5          14.6                2.1 +/-    1.12       5.3 +/-    1.12  0.030 / 0.020
G17     346.0          75.0                4.1 +/-    0.32       4.2 +/-    0.32  0.020 / 0.020
G19     261.7          66.3                4.3 +/-    0.89       4.7 +/-    0.89  0.220 / 0.120
G24     318.6          12.6                2.1 +/-    1.72       5.5 +/-    1.72  0.230 / 0.180
G28     63.3           49.5                4.0 +/-    0.60       5.1 +/-    0.60  0.090 / 0.110
G30     151.8          32.4                5.5 +/-    1.69       9.2 +/-    1.69  0.070 / 0.110