PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-07:58:10
G01     40.4           15.0                3.0 +/-    1.64       7.5 +/-    1.64  0.050 / 0.080
G02     198.9          11.0               -0.2 +/-    1.48      -0.7 +/-    1.48  0.060 / 0.080
G06     178.5          37.3                6.2 +/-    1.45       9.4 +/-    1.45  0.030 / 0.030
G13     237.5          20.9                5.0 +/-    2.16      10.7 +/-    2.16  0.030 / 0.020
G15     268.8          11.9                5.1 +/-    2.07      13.7 +/-    2.07  0.150 / 0.190
G17     7.9            68.2                4.3 +/-    0.62       4.6 +/-    0.62  0.090 / 0.210
G19     287.0          70.9                4.0 +/-    0.50       4.2 +/-    0.50  0.050 / 0.060
G24     316.5          19.5                2.6 +/-    1.63       5.8 +/-    1.63  0.080 / 0.060
G28     74.8           45.4                5.0 +/-    1.36       6.7 +/-    1.36  0.110 / 0.330
G30     154.6          24.6                6.2 +/-    1.76      12.2 +/-    1.76  0.150 / 0.180