PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-20:28:10
G02     69.9           25.6                7.4 +/-    1.27      14.3 +/-    1.27  0.030 / 0.040
G05     46.6           48.3                7.7 +/-    0.63       9.9 +/-    0.63  0.040 / 0.040
G12     179.0          14.9               13.1 +/-    1.50      32.6 +/-    1.50  0.150 / 0.210
G13     115.6          24.6               12.8 +/-    1.09      25.1 +/-    1.09  0.120 / 0.250
G15     158.9          22.3               14.1 +/-    1.67      29.2 +/-    1.67  0.180 / 0.260
G21     282.6          25.0               10.2 +/-    2.11      19.9 +/-    2.11  0.120 / 0.150
G25     219.1          40.0               10.7 +/-    1.57      15.6 +/-    1.57  0.100 / 0.100
G26     317.2          12.5               10.2 +/-    3.77      26.9 +/-    3.77  0.090 / 0.090
G29     336.7          67.5                9.7 +/-    0.39      10.4 +/-    0.39  0.110 / 0.240