PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-04:42:40
G01     317.6          21.3                6.8 +/-    2.06      14.4 +/-    2.06  0.080 / 0.180
G08     253.5          11.0                8.1 +/-    4.88      22.0 +/-    4.88  0.090 / 0.310
G10     86.1           50.7                7.6 +/-    0.67       9.5 +/-    0.67  0.210 / 0.210
G11     298.9          25.0                5.6 +/-    1.15      10.8 +/-    1.15  0.240 / 0.300
G14     303.9          70.2                5.8 +/-    0.90       6.1 +/-    0.90  0.040 / 0.040
G18     300.5          43.1                7.3 +/-    4.22      10.1 +/-    4.22  0.040 / 0.040
G20     102.0          43.4               14.4 +/-    1.32      19.8 +/-    1.32  0.090 / 0.180
G22     303.0          13.9                5.8 +/-    1.55      14.7 +/-    1.55  0.130 / 0.180
G31     172.6          48.6                8.1 +/-    1.26      10.4 +/-    1.26  0.180 / 0.390
G32     18.5           63.1                6.7 +/-    0.60       7.5 +/-    0.60  0.180 / 0.450