PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/06-19:57:40
G02     9.9            70.3               13.9 +/-    0.71      14.7 +/-    0.71  0.060 / 0.180
G05     161.3          45.2               17.7 +/-    0.68      23.8 +/-    0.68  0.080 / 0.150
G06     46.8           27.6                9.8 +/-    1.07      18.0 +/-    1.07  0.060 / 0.080
G12     245.8          79.8               13.1 +/-    0.57      13.3 +/-    0.57  0.070 / 0.070
G19     88.8           17.1               12.7 +/-    1.27      30.1 +/-    1.27  0.020 / 0.030
G20     197.1          13.0               23.6 +/-    3.93      61.6 +/-    3.93  0.030 / 0.030
G24     219.6          13.5               21.1 +/-    2.53      54.3 +/-    2.53  0.130 / 0.390
G25     310.1          46.7               14.4 +/-    1.69      18.9 +/-    1.69  0.130 / 0.390
G29     297.4          19.1               13.1 +/-    0.80      29.4 +/-    0.80  0.050 / 0.070