PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-15:12:40
G03     304.2          62.9                8.3 +/-    0.99       9.2 +/-    0.99  0.060 / 0.130
G14     74.7           33.6                7.6 +/-    1.28      12.5 +/-    1.28  0.080 / 0.120
G16     153.9          34.4               11.5 +/-    1.84      18.5 +/-    1.84  0.060 / 0.110
G18     210.9          15.4                9.3 +/-    0.97      22.9 +/-    0.97  0.070 / 0.110
G22     240.2          76.9                9.0 +/-    0.29       9.2 +/-    0.29  0.030 / 0.020
G23     300.7          32.6                6.3 +/-    1.95      10.5 +/-    1.95  0.030 / 0.030
G26     114.4          50.0               10.0 +/-    0.73      12.7 +/-    0.73  0.080 / 0.110
G31     42.1           40.7                6.3 +/-    1.30       9.1 +/-    1.30  0.080 / 0.120
G32     91.2           11.7                8.7 +/-    1.30      23.3 +/-    1.30  0.040 / 0.030