PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/22-19:13:00
G01     317.7          20.7                7.6 +/-    3.28      16.5 +/-    3.28  0.330 / 0.350
G08     254.7          11.3                9.1 +/-    4.48      24.6 +/-    4.48  0.250 / 0.210
G10     84.6           51.8                9.0 +/-    0.80      11.1 +/-    0.80  0.050 / 0.050
G11     300.7          24.1                6.0 +/-    1.18      11.9 +/-    1.18  0.050 / 0.050
G14     308.4          71.0                8.0 +/-    0.67       8.4 +/-    0.67  0.290 / 0.300
G18     105.5          25.0                8.8 +/-    2.29      17.2 +/-    2.29  0.280 / 0.290
G22     302.2          12.6                7.3 +/-    2.73      19.3 +/-    2.73  0.060 / 0.030
G25     98.1           10.0               -1.4 +/-   40.16      -3.9 +/-   40.16  0.060 / 0.030
G31     176.6          44.7               10.7 +/-    0.79      14.4 +/-    0.79  0.040 / 0.020
G32     12.4           65.3                7.0 +/-    0.51       7.6 +/-    0.51  0.040 / 0.020