PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-20:43:00
G07     55.6           67.8               14.8 +/-    0.96      15.8 +/-    0.96  0.030 / 0.030
G08     52.4           40.8               12.8 +/-    1.62      18.3 +/-    1.62  0.040 / 0.030
G09     179.0          40.7               19.1 +/-    0.90      27.4 +/-    0.90  0.110 / 0.140
G11     120.2          34.0               18.4 +/-    0.95      29.8 +/-    0.95  0.070 / 0.120
G17     198.6          12.8               25.1 +/-    2.95      65.7 +/-    2.95  0.110 / 0.300
G18     103.9          14.9               17.3 +/-    2.12      43.2 +/-    2.12  0.110 / 0.270
G23     161.0          11.9               22.5 +/-    2.24      60.1 +/-    2.24  0.070 / 0.070
G27     38.2           11.9               10.9 +/-    3.11      29.2 +/-    3.11  0.070 / 0.080
G28     267.1          47.9               16.9 +/-    3.29      21.9 +/-    3.29  0.040 / 0.040
G30     329.4          58.2               14.4 +/-    0.36      16.6 +/-    0.36  0.030 / 0.030