PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-08:43:00
G03     193.3          23.4                5.1 +/-    1.52      10.4 +/-    1.52  0.020 / 0.020
G07     291.4          39.1                3.7 +/-    2.04       5.5 +/-    2.04  0.030 / 0.030
G08     139.7          28.4                6.8 +/-    0.95      12.3 +/-    0.95  0.140 / 0.370
G09     322.1          65.7                4.2 +/-    0.68       4.6 +/-    0.68  0.050 / 0.110
G16     43.1           42.0                4.2 +/-    0.64       5.9 +/-    0.64  0.060 / 0.120
G23     105.1          81.7                4.0 +/-    0.28       4.0 +/-    0.28  0.060 / 0.070
G26     43.4           14.6                2.2 +/-    2.03       5.5 +/-    2.03  0.060 / 0.070
G27     98.6           33.4                5.5 +/-    0.94       9.0 +/-    0.94  0.040 / 0.060
G30     272.4          10.8              -12.5 +/-   22.03     -34.3 +/-   22.03  0.040 / 0.070