PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-20:58:10
G02     11.2           70.1                9.2 +/-    0.39       9.7 +/-    0.39  0.020 / 0.020
G05     157.4          46.1               12.6 +/-    0.35      16.8 +/-    0.35  0.030 / 0.020
G06     46.1           27.9                7.2 +/-    1.68      13.1 +/-    1.68  0.040 / 0.040
G12     247.4          81.0                9.6 +/-    1.18       9.7 +/-    1.18  0.030 / 0.040
G19     84.8           22.2                8.6 +/-    2.25      17.9 +/-    2.25  0.060 / 0.200
G24     218.6          13.9               14.2 +/-    1.45      36.1 +/-    1.45  0.070 / 0.110
G25     313.2          40.1                9.4 +/-    1.24      13.6 +/-    1.24  0.050 / 0.080
G29     294.6          15.2                9.4 +/-    1.61      23.4 +/-    1.61  0.060 / 0.080