PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-01:27:40
G01     218.3          10.8                8.5 +/-    2.58      23.3 +/-    2.58  0.030 / 0.050
G03     265.6          70.0                4.2 +/-    0.44       4.4 +/-    0.44  0.030 / 0.050
G09     299.6          15.0                4.3 +/-    1.36      10.8 +/-    1.36  0.110 / 0.300
G14     91.9           22.1                3.1 +/-    1.08       6.5 +/-    1.08  0.110 / 0.320
G16     134.3          52.9                7.5 +/-    0.62       9.2 +/-    0.62  0.180 / 0.360
G22     206.3          63.5                4.5 +/-    0.39       5.0 +/-    0.39  0.280 / 0.380
G23     314.2          44.2                5.1 +/-    1.28       7.0 +/-    1.28  0.040 / 0.060
G26     80.9           53.6                3.5 +/-    0.75       4.3 +/-    0.75  0.060 / 0.070
G31     49.3           24.1                2.2 +/-    0.65       4.4 +/-    0.65  0.040 / 0.030