PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-01:27:40
G01     223.3          16.0                7.4 +/-    3.54      17.9 +/-    3.54  0.030 / 0.040
G03     287.4          67.6                5.2 +/-    0.72       5.5 +/-    0.72  0.030 / 0.040
G14     85.5           26.5                3.7 +/-    2.07       7.0 +/-    2.07  0.070 / 0.180
G16     142.8          46.3                7.2 +/-    1.45       9.6 +/-    1.45  0.070 / 0.180
G22     219.8          69.9                5.9 +/-    0.48       6.2 +/-    0.48  0.030 / 0.040
G23     308.7          39.0                5.0 +/-    1.56       7.4 +/-    1.56  0.030 / 0.030
G26     94.5           54.1                5.5 +/-    0.83       6.6 +/-    0.83  0.260 / 0.320
G31     46.3           30.1               -2.7 +/-    1.44      -4.7 +/-    1.44  0.220 / 0.220