PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-01:27:50
G01     218.3          10.8                6.9 +/-    4.26      19.0 +/-    4.26  0.030 / 0.040
G03     265.6          70.0                4.5 +/-    0.63       4.7 +/-    0.63  0.040 / 0.040
G09     299.6          15.0                3.3 +/-    2.61       8.3 +/-    2.61  0.130 / 0.200
G14     91.9           22.1                3.0 +/-    2.19       6.2 +/-    2.19  0.110 / 0.250
G16     134.3          52.9                6.3 +/-    0.88       7.7 +/-    0.88  0.230 / 0.520
G22     206.3          63.5                4.5 +/-    0.42       4.9 +/-    0.42  0.210 / 0.430
G23     314.2          44.2                5.3 +/-    0.83       7.3 +/-    0.83  0.140 / 0.350
G26     80.9           53.6                3.5 +/-    0.98       4.3 +/-    0.98  0.100 / 0.360
G31     49.3           24.1                3.1 +/-    3.12       6.2 +/-    3.12  0.040 / 0.030