PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-19:27:40
G02     4.9            72.4                9.8 +/-    0.48      10.2 +/-    0.48  0.040 / 0.070
G05     159.4          43.4               12.8 +/-    0.82      17.7 +/-    0.82  0.040 / 0.070
G06     45.3           29.5                7.9 +/-    0.99      14.0 +/-    0.99  0.030 / 0.030
G12     258.4          81.6                9.2 +/-    0.85       9.3 +/-    0.85  0.020 / 0.030
G19     82.5           23.9               11.5 +/-    1.08      23.0 +/-    1.08  0.060 / 0.090
G24     219.8          15.4               12.7 +/-    3.61      31.2 +/-    3.61  0.060 / 0.100
G25     314.2          38.4               10.2 +/-    1.46      15.2 +/-    1.46  0.040 / 0.040
G29     292.9          13.6               11.4 +/-    1.74      29.4 +/-    1.74  0.040 / 0.040