PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/27-04:27:40
G07     353.3          63.9                4.1 +/-    1.11       4.5 +/-    1.11  0.040 / 0.080
G08     78.6           51.7                4.5 +/-    1.12       5.6 +/-    1.12  0.050 / 0.110
G09     182.8          61.8                6.0 +/-    0.26       6.7 +/-    0.26  0.030 / 0.030
G11     138.2          19.8                8.6 +/-    2.13      19.1 +/-    2.13  0.030 / 0.030
G23     158.9          31.3                5.4 +/-    1.42       9.3 +/-    1.42  0.030 / 0.040
G27     45.6           24.1                3.2 +/-    1.98       6.5 +/-    1.98  0.030 / 0.040
G28     247.6          38.7                4.8 +/-    0.80       7.2 +/-    0.80  0.060 / 0.100
G30     311.7          43.4                3.9 +/-    0.95       5.4 +/-    0.95  0.060 / 0.180