PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-11:57:40
G01     40.8           15.6                3.1 +/-    1.90       7.6 +/-    1.90  0.040 / 0.080
G06     176.3          38.7                8.2 +/-    0.76      12.2 +/-    0.76  0.050 / 0.070
G13     238.9          21.6                6.7 +/-    2.68      14.1 +/-    2.68  0.130 / 0.250
G15     270.9          12.2                7.1 +/-    1.26      19.0 +/-    1.26  0.130 / 0.250
G17     8.8            68.3                5.2 +/-    0.85       5.6 +/-    0.85  0.130 / 0.150
G19     284.8          70.9                5.1 +/-    0.44       5.4 +/-    0.44  0.140 / 0.220
G24     317.0          18.5                5.1 +/-    1.59      11.6 +/-    1.59  0.140 / 0.280
G28     73.4           46.0                3.7 +/-    1.04       4.9 +/-    1.04  0.130 / 0.270
G30     154.9          27.5                6.1 +/-    1.43      11.2 +/-    1.43  0.050 / 0.060