PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-23:12:30
G02     227.7          70.7               15.2 +/-    0.76      16.0 +/-    0.76  0.040 / 0.070
G05     173.4          11.5               15.4 +/-   32.73      41.7 +/-   32.73  0.030 / 0.060
G06     43.5           64.2               13.5 +/-    0.57      14.8 +/-    0.57  0.130 / 0.310
G12     321.2          46.0               12.6 +/-    0.99      16.7 +/-    0.99  0.160 / 0.240
G17     64.0           28.9               11.5 +/-    0.61      20.6 +/-    0.61  0.030 / 0.040
G19     49.2           43.9               12.6 +/-    1.06      17.3 +/-    1.06  0.030 / 0.040
G24     252.3          38.1               15.4 +/-    1.12      23.1 +/-    1.12  0.050 / 0.100