PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-04:12:50
G01     256.1          37.4                6.3 +/-    1.21       9.5 +/-    1.21  0.030 / 0.040
G03     316.3          37.3                4.3 +/-    1.24       6.6 +/-    1.24  0.040 / 0.040
G11     238.9          15.3                6.9 +/-    1.05      17.1 +/-    1.05  0.080 / 0.080
G14     57.0           42.1                4.1 +/-    0.61       5.8 +/-    0.61  0.070 / 0.080
G22     309.5          61.6                7.0 +/-    0.90       7.8 +/-    0.90  0.070 / 0.090
G23     282.6          15.3                1.2 +/-   10.92       3.0 +/-   10.92  0.070 / 0.100
G25     40.7           10.5                6.2 +/-    1.70      17.3 +/-    1.70  0.040 / 0.050
G26     143.4          33.0                9.2 +/-    0.61      15.1 +/-    0.61  0.030 / 0.040
G31     42.0           65.4                3.8 +/-    0.39       4.1 +/-    0.39  0.140 / 0.300
G32     72.3           27.8                4.3 +/-    0.57       7.8 +/-    0.57  0.130 / 0.300