PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-21:58:10
G02     63.1           30.5                7.5 +/-    0.95      12.9 +/-    0.95  0.030 / 0.050
G05     52.1           56.4                7.6 +/-    0.41       8.9 +/-    0.41  0.030 / 0.040
G12     181.5          24.6               10.9 +/-    2.30      21.5 +/-    2.30  0.060 / 0.160
G13     123.7          18.8               11.2 +/-    1.72      25.3 +/-    1.72  0.110 / 0.200
G15     162.9          15.2               14.7 +/-    3.50      36.5 +/-    3.50  0.060 / 0.080
G21     275.2          19.7               10.2 +/-    1.86      22.5 +/-    1.86  0.060 / 0.070
G25     229.0          47.9               11.2 +/-    1.24      14.5 +/-    1.24  0.060 / 0.120
G29     330.7          58.5                8.0 +/-    0.57       9.2 +/-    0.57  0.100 / 0.130