PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-19:27:50
G02     21.2           63.7                7.0 +/-    0.76       7.8 +/-    0.76  0.090 / 0.140
G05     151.6          53.4               11.7 +/-    0.59      14.2 +/-    0.59  0.120 / 0.130
G06     48.6           22.8                6.2 +/-    1.51      12.8 +/-    1.51  0.060 / 0.070
G12     228.1          77.8                7.8 +/-    0.21       8.0 +/-    0.21  0.080 / 0.070
G19     92.5           13.9                8.1 +/-    1.46      20.8 +/-    1.46  0.210 / 0.350
G25     308.3          45.6                8.3 +/-    0.83      11.0 +/-    0.83  0.250 / 0.310
G29     300.6          21.9                8.5 +/-    1.16      17.9 +/-    1.16  0.040 / 0.040