PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-15:28:10
G02     217.2          60.4               12.5 +/-    1.08      14.2 +/-    1.08  0.050 / 0.060
G06     55.5           74.1               10.8 +/-    0.44      11.2 +/-    0.44  0.080 / 0.070
G12     319.2          37.3                8.9 +/-    0.98      13.5 +/-    0.98  0.190 / 0.350
G17     60.6           29.1               10.3 +/-    2.34      18.4 +/-    2.34  0.180 / 0.290
G19     43.7           46.5                9.6 +/-    0.57      12.7 +/-    0.57  0.040 / 0.080
G24     265.6          41.1               11.2 +/-    0.73      16.1 +/-    0.73  0.040 / 0.080
G28     124.2          11.8               13.5 +/-    2.50      36.3 +/-    2.50  0.060 / 0.080