PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-23:42:50
G02     214.4          59.1               11.2 +/-    0.86      12.8 +/-    0.86  0.080 / 0.090
G06     71.6           79.1                9.7 +/-    0.61       9.9 +/-    0.61  0.080 / 0.060
G12     316.8          31.6                8.5 +/-    1.28      14.5 +/-    1.28  0.040 / 0.050
G17     56.0           32.7                8.9 +/-    2.27      14.7 +/-    2.27  0.040 / 0.060
G19     37.0           50.2               11.5 +/-    3.05      14.4 +/-    3.05  0.100 / 0.240
G24     266.2          42.1               10.1 +/-    1.95      14.2 +/-    1.95  0.110 / 0.230
G28     120.0          18.9               12.2 +/-    3.32      27.6 +/-    3.32  0.120 / 0.130