PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-15:58:00
G10     295.8          51.5                5.8 +/-    0.91       7.2 +/-    0.91  0.040 / 0.040
G14     209.6          10.9               -3.5 +/-   22.65      -9.5 +/-   22.65  0.030 / 0.040
G15     46.6           30.6                4.1 +/-    0.40       7.1 +/-    0.40  0.040 / 0.050
G20     349.3          65.4                4.7 +/-    0.95       5.1 +/-    0.95  0.040 / 0.040
G21     97.7           72.1                6.8 +/-    0.38       7.1 +/-    0.38  0.320 / 0.650
G24     94.3           25.5                8.0 +/-    0.57      15.6 +/-    0.57  0.380 / 0.640
G27     304.2          31.9                5.1 +/-    1.18       8.5 +/-    1.18  0.100 / 0.150
G32     210.0          29.7                8.3 +/-    1.41      14.6 +/-    1.41  0.100 / 0.140