PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-20:27:50
G02     74.6           21.6                8.8 +/-    1.44      18.5 +/-    1.44  0.060 / 0.130
G05     44.9           42.7                8.6 +/-    0.60      12.0 +/-    0.60  0.060 / 0.100
G12     180.4          13.8               13.3 +/-    3.22      34.1 +/-    3.22  0.140 / 0.410
G13     108.9          27.5               12.7 +/-    0.91      23.4 +/-    0.91  0.080 / 0.330
G15     152.5          29.1               12.9 +/-    1.20      22.9 +/-    1.20  0.060 / 0.210
G20     228.5          14.4               11.8 +/-    5.45      29.7 +/-    5.45  0.060 / 0.200
G21     287.9          28.6                8.2 +/-    0.74      14.7 +/-    0.74  0.030 / 0.060
G25     216.6          35.9                9.6 +/-    1.05      15.0 +/-    1.05  0.030 / 0.060
G26     314.2          13.9                8.1 +/-    1.28      20.6 +/-    1.28  0.090 / 0.180
G29     346.2          74.9               10.3 +/-    0.38      10.7 +/-    0.38  0.120 / 0.250